ITS, the Incompatible Timesharing System, was an operating system for the Digital Equipment Corporation PDP-6 and PDP-10 computers developed at MIT Artificial Intelligence Laboratory in the 1960s and 1970s.
Today, SDF runs a publicly accessible ITS system on a PDP-10 emulator.
Connecting to the SDF ITS System
tvcon -2BCS hactrn.org -p 11100
You’d normally log in by pressing C-z, but in TVCON, we need
to press F1 instead.
Log in with :LOGIN <user>, or :LOGIN <user>$U (where $ is an ESCAPE)
Don’t forget to :LOGOUT when you’re done!
Basic Commands
| UNIX Command | DDT Command | Monitor Command | Note |
|---|---|---|---|
ls | ^F | :listf | |
ls <dir> | <dir>^F | :listf <dir> | |
ls / | ^R m.f.d. (file) | print m.f.d. (file) | [1] |
mkdir <dir> | ^R <dir>;..new. (udir) | :print <dir>;..new. (udir) |
Notes
"m.f.d. (file)"is the literla name of the Master File Directory on the disk.
Environment
| Variable | Purpose |
|---|---|
..CLOBRF | If nonzero, FOO^K (start a new FOO) clobbers an existing FOO |
..MORWARN | If nonzero, --More-- will always display (Space=yes, Rubout=no) |